Finishing machine



May 14, 1935.

F. B. KEALL FINISHING MACHINE 2 Sheets-Sheet 1 Filed Dec. 2, 1932 A/VEA/ UE.

May 14, 1935.

F. B. KEALL FINISHING MACHINE Filed Dec. 2, 1.932 2 Sheets-sheaf. 2

Patented May 14,1935 2,000,961

UNITED STATES PATENT'OFFICE FINISHING momma:

Frank Bycroft Keall, Leicester, England, assignor to United Shoe Machinery Corporation, Paterson, N. J.', a corporation of New Jersey Application December 2, 1932, sci-m1 No. 645,447

In Great Britain December .7, 1934 20 Claims. (01'. 13-78) This invention relates to machinesfor finishis rotated, and means for angularly adjusting said ing the edges of boot or shoe parts and is herein member withrespect to the drive shaft.

illustrated as embodied in a machine of the type Since the obliquity of the axes of the drive shaft disclosed United States Letters Patent No. and the above-mentioned member in a device of 5 1,982,740, granted December 4, 1934 upon an apthe type above referred to causes the tool shaft 5 plication filed in the namesof Keall and Jones, to be operated when the drive shaftis rotated, the for setting or burials-hing the edges of boot or shoe amplitude of oscillation of the tool shaft can be fliereinafter referred to as shoe) soles. varied as desired by varying the angular relation In the of such a machine it is sometimes on theaxisof the drive shaft and the above-menll) desirable that the amplitude of oscillation of the tioned member which it carries. Therefore, an-

tool shall be varied in accordance with the nature other feature of the invention consists in operand type of work being operated upon. For inator -controlled means for operating the adjusting stance, the edge of the sole is either comparameans, referred to above, movement of which retively thin or is composed of comparatively soft suits ina changein the angular relation between to material, or both, better results can be obtained the axes of the drive shaft and the member which with a tool having a short oscillation than with it the illustrated machine, this adone having a long oscillation, for the reason that justmentcan be effected while a shoe is being a tool having a long oscillation tends to hammer operated 'uponby the machine as well as when the and indent the edge of the sole and therefore does machine is at rest. V

not produce such a smooth finish as a tool hav- Invention is also to be recognized in structures 20 ing a short oscillation. Further, it is found that disclosed herein either one of which may be emwhen setting the edge of a sharply rounded porployed cfiectivelytoadjust angularlythe tool shaft tion of a sole, suchas at the ball line or at the actuating member with respect to the tool shaft tip of a narrow too, it is easier for the: operator and both of which comprise a slide arranged for to present the sole to the tool and to satismovement toward and away from the member, 25

iactorily the edge at these portions if the amount and cormections between the slide and the memof oscillation of the tool is small. Again, a small ber arranged to swing the latter about an axis oscillation of thetool is desirable when approachintersecting the longitudinal axes of the drive the heel breast as it minimizesthe possibility of shaft and member at a common point. To this 0 the tool marring the heel breast and facilitates the end, in one embodiment of the invention the tool finishing of the edge of the sole close up to the actuating member, herein illustrated as a sleeve, heel breast, V V has a positioning surface which extends in a di- Moreover, since shoes having one or more ofthe rection oblique to its axis and which is enabove characteristic portions which favor the use eas d y a p ti n of t a ov -m nt d s of a tool having a short oscillation often have In another embodiment of the invention is in- 35 other portions which may be most effectively fineluded a link connecting the above-mentioned ished by means of a tool having along oscillation, slide and sleeve and constructed and arranged it is desirable that the operator shall be able to h sl ve when he slide is moved toreadily to change the length of oscillation of the Ward and y 7 tool without interrupting at all, or at least to These andlother features of the invention, in- 40 any appreciable extent, the presentation ofthe lud ta d ta f st u t n and arshoe to the tool. Therefore, it is one of the several rangements of parts, wil be he einaf er eobjects of the present invention to provide a s ri d i connection with the mpanyin simple mechanism in anedg-e setting machine by drawi s a d w b pointed t in the appended which the operator may alter at will the length of claimsa 45 oscillation of the tool. In the drawings,

In accordance with this object there is provided 1 is a p a v of a mplary form of in the illustrated machine an oscillating tool shaft mecha i embodying t invention;

carrying an edge setting tool, means for operat- Fig, 2 is a sectional elevation of the mechanism ing the tool shaft comprising a drive shaft havof Fig.1 as seen along the line IIII; 50 ing an angularly adjustable member for actuat Fig. 3 is asectional elevation on the line III-III ing the tool shaft, the axisof which member is in Fig. normally oblique tothe axis of the drive -shaft,and .Fig. 4 is a sectional view taken along the line connections between said member and the tool IVIV in Fi 21;

shaft for oscillating the latter as the drive shaft Fig. 5 is an elevation illustrating a part of the 55 mechanism for interchanging and locking in position the edge setting tools;

Fig. 6 is a sectional detail in elevation of an alternative mechanism for varying the length of oscillation of the tool;

Fig. 7 is a sectional view on the line VII-VII in Fig. 6; and

Fig. 8 is a sectional View along the line VIII VIII in Fig. 6.

In applying the form of mechanism for varying the amount of oscillation of the tool as illustrated in Figs. 1, 2 and 3 to the mechanism of the attachment disclosed in the abovermentioned Keall and Jones patent, the angle portion (referred to as 52 in said patent) of the rotary driving shaft (referred to as 54 in said patent) is dispensed with and the rotary drive shaft-I as herein illustrated is reduced in diameter as shown at -2 (Figs. 1 and 3) and has formed on its reduced portion a ball 3. The center of the ball 3 is coincident with the intersection of the axisof abearing 4 of a swivel member 5 and the axis oftrunm'ons 5 of the swivel member. As in the above-mentioned Keall and Jones construction, the trunnions 6 are rotatably mounted in bearing bushings I carried in a yoke 8 which'is fixed to the sections 9, I!) of the tool shaft, both of which are rotatably mounted in the frame l.|. I

The tools i2 and I3 ofthe illustrated machine which are adapted to operate on the edges of the foreparts and shanks of soles respectively are individually mounted in a tool holder M which is fixed to the outer'end of the section H) of the tool shaft and'are caused to be oscillated through the agency of a tool shaft actuating member carried by the drive shaft 1 now to be described. This tool shaft actuating member is constituted by a sleeve l5 arranged-to turn freely'within the bearing 4 and having a bore I6 concentric with its outer surface just large enough to receive the ball 3, the ends of a pin l1 passing through the center of and fixed in the ball 3 forming trunnions on which the sleeve I5 is mounted to swing andwhich insure that the sleeve will turn with the drive shaft I.

The sleeve I5 is in effect 'a skew crank, the axis of which is normally oblique to the axis of the drive shaft l as in the construction of the Keall and Jones patent mentioned above as a result of which the sleeve is caused to gyrate when the drive shaft is rotated. In order that -.the amplitude of oscillation of the tools of the present machine may be altered in view of the nature of the work being operated upon, the obliquity of the sleeve l5 with respect to the axis of the drive shaft I, which governs the operation of the machine in this respect, can be varied by the operator, either during the progress of the operation of the machine on a shoe or at any other time, by means now to be described. In the embodiment of the-invention illustrated in Fig. 3, the sleeve 15 is provided with a positioning surface l8 formed by boring one end of the sleeve in a directionoblique to its axis; The sleeve l5-is angularly adjusted with respect to the drive shaft l by means of a slide I?! mounted on the drive shaft and arranged to move along it towardfa'nd away from the sleeve and having a knob-'20' shaped to fit within the positioning surface I8. A pin 2 l-passing through the knob 20 an'd'a slot in the shaft l insures that the slide IE! will rotate with the drive shaft and the sleeve l5. The position of the slide !9 may be varied at will by'means'of a bell crank lever V 22 pivoted in a boss in a cover 23 for the frame H, the lower ar1n 24 of'which crank has studs 25 received within a groove 26 in the slide i 9. The exposed arm'2T of the bell crank lever 22 may be operated in any desired manner, as by a treadle such as that employed in the mechanism disclosed in the aforesaid patent for effecting a reversal of the tool. Movement of the bell crank lever 22 is limited by set screws 28, 29 which may be engaged by an arm 30 of the bell crank lever 22, the end of which arm is connected to the frame II by a spring 3| which causes the arm 30 normally to be held against the set screw 29.

Another construction within the scope of my invention, and illustrated in Fig. 6, will now be described. This construction is similar to the construction described above in that it comprises a drive shaft la on which a sleeve l5a having a concentric bore I6a and a slide lSa are mounted in the same manner as in the last described mechanism. That is, the slide lQa, while prevented by a pin 2 la from turning about the shaft I a, is freely movable axially thereof under the control of the arm 24 the lower end of which is received in a groove 26a in the slide; and the sleeve [5a is mounted to swing with respect to the shaft I a on trunnions Ila extending from a spherical enlargement 3a of the central portion 2a of the drive shaft. The operative connection between the slide lea and sleeve i5a is provided by a link 32 which is arranged to encircle the adjacent end of the swivel'member 5 as indicated in Fig. 8 and which is connected to lugs extending from the slide and sleeve by means of pins 33 and 34 respectively. It will now be apparent that a change in the angular relation of the link 32 with respect to the drive shaft resulting from movement of the slide Mia along the drive shaft will cause a corresponding change in the angular relation between the sleeve Mia and the drive shaft. The wear on the trunnions Ila is minimized in the construction illustrated in Fig. 6 owing to the provision of flattened surfaces 35 (Figs. 6 and 7) on the end of the shaft la remote from the slide lSa which bear against the sides of an elongated groove 36 in the sleeve 15a extending in a direction perpendicular to the axis of the trunnions Fla.

The manner in which either form of operating mechanism described above transforms the ro' tary movement of the drive shaft into the oscillating movement of the tool holder will now be described. The sleeve l5 or ifia being so positioned that its axis is inclined to that of the drive shaft 1 or Ia respectively, rotation of the latter causes the sleeve I5 or GM to gyrate about the intersection of the axis of rotation of the drive shaft and that of the trunnions H or i'ia respectively. This gyration is transmitted to the swivel member 5 in which the sleeve i5 or |5a is rotatably mounted. The gyrating movement of the swivel member 5 may be resolved into two oscillating movements in mutually perpendicular planes, one of which, herein arbitrarily called horizontal, is defined by the axis of the drive shaft I'or la. and the axis of the trunnions l! or IIarespectively, and the other of which, herein arbitrarily called vertical, is defined by the axis of the drive shaft I or I a and the axis of the trunnions 6 of the swivel member 5. As the trunnions 6 of the swivel member 5 are freely rotatable in the bearing bushings I, the component of the gyrating movement of the swivel member 5 which may be resolved in the horizontal plane is spent in rotation of the trunnions 6 with respect to the bearing bushings 1. However, the other component of the gyrating movement of all:

the swivel'mmbei', that in a vertical plane perpendicular to the axis about which the tool oscillates, is utilized fully and imparts to the yoke B and henceto the tool-shaft and tool an oscillating'movement the angular extent ofwhich is equal to twice the angle between the axis of the sleeve i'5 orliia and theaxis about which the drive shaft 3 l or M respectively is rotated. It is apparent, accordingly, that the amplitude of movement of the tool can be varied at will by controlling the angular relationof the sleeve iii drive shaft 1 or In. l

- As inthe mechanism disclosed in'the aforementioned Keall and Jones patent, the positions cf the tools l2 and 1 3 of the present construction are interchanged by means of-a rack bar 3?, the end of "which adjacent to the tool holder is provided with teeth-(Fig. 2) which mesh with other teethon a tool carrier i t rotatably mounted in the tool holder. The-rack bar 31 is mounted to slide axially of the sections 9 and H) of the tool shaft and,by means of the mechanism now to be described, may be moved between and locked in its extreme positions in -which the tools l2 and I3 are correspondingly held in operative positions. This mechanism comprises a bell crank 39 rotatably mounted on a rod 40 which is fixed in -the frame H, the bell crank being connected to the rack bar 3l by means of a stud H which is fixed to the upper arm of the b'ellcrank and extendsbetween the flangesofa collar 32 ,or a with respect to the axis of rotation of the fixed'to the end of the rack bar 3'! remote from the tool holder. The upper armofthe bell crank 39 carriesan adjustable set screw 43 the head of whichis arranged to co-operatewith the frame H to limit the rotation of the bell crank in a counterclockwise direction (Fig, 5) and hence to determine oneof the operative positions of the tools. Similarly, the lower arm of the bell crank 39 carries another adjustable set screw'M the head of which is arranged to engage a portion of cated to receive the shank of a latch 49 which is slidably retained in a bearing '50 integral with the lower end of the crank 39 and which is arranged toslide behind a plate 5| when the set screw 44 is in engagement with the portion of the frame H adjacent to it. The bell crank'tg is thus locked in one of its extreme positions so long as the latch 49 remains behind the plate 5'! The latch 43 is normally urged outwardly of the hearing 59 by'means of a spring 52, this movement of the latch being limited by a collar 53 attached to the shank of the latch and adapted to engage one end of the bearing 50. To swing the bell crank 39 into its other operative position the hand lever 55 (Fig. 5) is depressed, causing first the retraction of the latch 49 from engagement with the plate '51 and without imparting any rotative movement of the bell crank 39, However, as soon as the end of the latch 49 passes the end of the plate 51, the arm 48 abutting the head of the collar'53 causes the bell crank 39 to'be rotated in a counterclockwise direction (Fig.5) .un-

til the set screw 43 engages the portion of the frame! I adjacent to it. Toward the end of this movement of the bell crank 39 the end of a latch 54 is moved into engagement with the co-operating end of a plate 55 and continued rotation of the bell crank in this direction, which is effected by engagement of the end of the arm 4'! with the adjacent end of the bearing 55 which supports the latch 54, permits the latch 54 to slide behind the plate 55 under the influence of a spring (not shown) in the same manner that the latch 43 operates as described above. It is apparent, therefore, that the above-described mechanism associated with the bell crank 39 not only may be employed to effect a reversal or interchange ofthe positions of the tools l2 and 13 but also to insure that the tools shall remain locked in either of their operative positions.

While upward movement of the tool carrier 38 is yieldingly resisted in a well-known manner, thesaane as in the machine of the above-mentioned patent, a diiferent method of securing the tools therein is employed in the present machine. The shanks of the tools I2 and 13 are clamped securely in the lower end of the tool carrier 38 by means of a bolt 5'1 having a wedge-shaped head 58 extending between the shanks of the tools and firmly gripping them in the carrier when a nut threaded on the bolt {fl is tightened.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In an edge setting machine, an oscillating tool shaft carrying an edge setting tool, a rotatable drive shaft, a member the axis of which is normally oblique to the axis of the drive shaft mounted on said shaft to rotate therewith and for angular adjustment with respect thereto, connections between said member and the tool shaft for oscillating the latter as the drive shaft is rotated, and means for angularly adjusting the said member withrespect to the drive shaft.

,2. An edge setting machine having, in combination, an oscillating tool shaft carrying an edge setting tool, a rotating drive shaft having a tool shaft actuating member mounted thereon, a swivel member operated by said actuating memher and rotatably mounted on the tool shaft for oscillating the latter as the drive shaft is rotated, said actuating member being mounted for angular adjustment with respect to the axis of said drive shaft about an axis intersecting the axes of the drive shaft, the actuating member and the swivel member at a common point, and means for angularly adjusting the actuating member with respect to the drive shaft.

- 3. In an edge setting machine, an oscillating tool shaft carrying anedge setting tool, means for oscillating the tool shaft comprising a rotating drive shaft having a member mounted thereon so-as to have a gyrating movement when the shaft is rotated, means operated by said gyrating member and rotatably mounted on the tool shaft for oscillating the latter as the drive shaft is rotated, said gyrating member being mounted for angular adjustment with respect to the axis of the drive shaft, and means carried by the drive shaft for angularly adjusting the gyrating member with respect to the drive shaft.

i. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotating drive shaft, a member mounted on said drive shaft the axis of which is normally inclined with respect to that of the drive shaft, means operated by said memher and rotatably mounted on the tool shaft for oscillating the latter .asthe drive shaft is. ro-.

tated, said member being mounted for angular adjustment on the drive shaft, means for adjusting said member comprising a slide mounted for movement axially of the drive shaft, and an operator controlled lever for operating the slide.

5. In an edge setting machine, a tool shaft carrying an edge setting tool, rotating drive means comprising a drive shaft and a skew crank, a swivel member connected to the crank and mounted to rotate with respect to the tool shaft for oscillating the latter as the drive means is rotated, said crank being mounted to swing about an axis intersecting the axes .of the drive shaft, crank and swivel member at a common point, and means for controlling the angular relation between the crank and the drive shaft.

6. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, rotating drive means comprising a drive shaft and a member mounted thereon to swing about an axis transverse to the axis of the drive shaft, a swivel member connected to the first-mentioned member and rotatably mounted in the tool shaft for oscillating the latter as the drive shaft is rotated, and means for angularly adjusting said firstmentioned member with respect to said drive shaft comprising a slide mounted for movement axially of the drive shaft and connections between the slide and said first-mentioned member constructed and arranged to swing the latter about said transverse axis as the slide is moved.

'7. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, a rotary drive shaft, a member mounted on said drive shaft the longitudinal axis of which is oblique to the axis of the drive shaft, means operated by the said member and rotatably mounted on the tool shaft for oscillating the latter as the drive shaft is rotated, said member being mounted to swing about a transverse axis intersecting the axes of the drive shaft and the last-mentioned means at a common point, a slide arranged to rotate with the drive shaft and said member, means for moving the slide toward and away from said member, and means operated by the movement of the slide for varying the angular relation of said member with respect to the drive shaft.

8. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, a rotary drive shaft having a member mounted thereon for angular adjustment, said member having a positioning surface disposed at an angle with respect to its axis, a slide engaging said positioning surface mounted on said drive shaft for movement toward and away from the member, an operator-controlled hand lever for operating said slide thereby to adjust angularly the member with respect to the drive shaft, and means connecting the member and the tool shaft for oscillating the latter as the drive shaft is rotated.

9. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, a rotating drive shaft having a member mounted thereon for angular adjustment and having an oblique positioning surface, connections between said member and the tool shaft for oscillating the latter as the drive shaft is rotated, and means for angularly adjusting said member with respect to the drive shaft comprising a slide mounted for movement axially of the drive shaft and arranged to engage said positioning surface.

10. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool,

a rotary drive shaft havinga member mounted thereon for angular adjustment, said member having a positioning surface disposed at an angle with respect to its axis, a slide engaging said positioning surface and mounted for movement toward and away from said member in the direction of the drive shaft axis thereby to adjust angularly the member with respect to the drive shaft, and means connecting the member and the tool shaft for oscillating the latter as the drive shaft is rotated.

11. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotary drive shaft having a skew crank mounted to swing thereon, one end of said crank being bored to provide a positioning surface extending in a direction which is oblique to the axis of the crank, means mounted to rotate with the drive shaft and the crank cooperating with said positioning surface angularly to adjust the crank, and means connecting the crank and the tool shaft for oscillating the latter as the drive shaft is rotated.

12. In an edge setting machine, a tool shaft carryingan edge setting tool, a rotary drive shaft, a sleeve mounted for pivotal movement on the drive shaft, one end of said sleeve having a cylindrical positioning surface extending in a direction which is oblique to the outer surface of the sleeve, a slide mounted for movement toward and away from the sleeve along the drive shaft and arranged to engage the positioning surface of the sleeve thereby to vary its angular relation with respect to the drive shaft, an operator-controlled member for operating the slide, and means connecting the sleeve and tool shaft constructed and arranged to oscillate the latter as the drive shaft is rotated.

13. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotary drive shaft, a sleeve surrounding said drive shaft and mounted to pivot thereon, one end of said sleeve having a cylindrical positioning surface the axis of which is oblique to the outer surface of the sleeve, means for adjusting the sleeve angularly with respect to the drive shaft comprising a slide mounted for movement along the drive shaft and arranged to engage the positioning surface of said sleeve, and means connecting the sleeve and tool shaft constructed and arranged to oscillate the latter as the drive shaft is rotated.

14. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, a rotary drive shaft having trunnions, a member carried by said trunnions the longitudinal axis of which member is normally oblique to that of the drive shaft, a slide mounted for movement along the drive shaft toward and away from said member, connections between the slide and said member for angularly positioning the latter with respect to the drive shaft as the slide is moved along it, and means connecting said member and tool shaft for oscillating the latter as the drive shaft is rotated.

15. In an edge setting machine, in combination, a tool shaft carrying an edge setting tool, a drive shaft, a member mounted on said drive shaft for angular adjustment with respect thereto, means for angularly adjusting said member comprising a slide mounted for movement along the drive shaft toward and away from said member and a link connecting said slide and member arranged to adjust the latter as the slide is moved, and means operatively connecting said member and tool shaft for oscillating the latter as the drive shaft is rotated.

ldln an edge; setting machine, in combina tion, a toolrshaft carrying an edge setting tool, a drive shaft, a sleeve carried by the drive shaft the &XlSOf'Whl Ch sleeve is normally inclined to the, axisof the driveshaft, means operatively connecting the sleeve and the tool shaft for oscillating the latter as. the drive shaft is rotated, and meansfor controlling the amplitude of oscillation of j the tool shaft comprising an operator-controlled slide mounted for movement toward and away from the sleeve and a link connecting the sleeve and said slide arranged to vary the inclination of the axes of the drive shaft and sleeve as theslide is moved. 1 I r r I 1'7. In an edge setting, machine, in combination, a tool shaftcarrying an edge setting tool, a driveshaft having trunnions'a sleeve pivotally supported on said'tru-nnions and adapted nor; mally to be adjusted thereon so-thatits axis is oblique to the axis of the drive shaft, means for adjusting-said sleeve with respect to the drive shaft comprising a slide mounted for movement along the drive shaft toward and away from said sleeve, a link connecting the slide and the sleeve arranged to rotate the sleeve about the trunnions as the slide is moved along the driveshaft, and means operatively connecting the sleeveand the tool shaft for oscillating the latter as the drive shaft is rotated.

18. In an edge setting machine, a tool carrier, a tool holder arranged for movement in the carrier between two operative positions, means for moving the tool holder between its operative positions comprising a member having a predetermined limited movement in opposite directions at the extremes of which the tool holder is disposed in its operative positions, locking means carried by said member for preventing its movement toward one extreme position from the other, and operator controlled means connected'to said looking means for successively releasing the locking means and moving the member from one operative position to the other.

19. In an edge setting machine, a tool carrier, a tool holder mounted for movement in said tool carrier between two operative positions, a crank for operating said holder having an adjustably limited movement at the extremes of which the tool holder is disposed in its operative positions, a bar connecting said tool holder and crank, locking means on said crank for normally preventing its movement from either operative position to the other, and a lever connected to said locking means and arranged successively to release the locking means and to swing the crank from one extreme position to the other.

20. In an edge setting machine, a tool carrier, a tool holder mounted for movement in said tool carrier between two operative positions, means for moving the tool holder between its operative.

positions comprising a member having an adjustably limited swinging movement at the extremes of which the tool holder is disposed in its operative positions, means on said member for looking it in its extreme positions, and operator-controlled means carried by said member and connected to said locking means for successively releasing the locking mean and swinging the memher from one extreme position to the other.

21. In an edge setting machine, a tool carrier, a tool holder mounted for movement in the carrier between two operative positions, means for moving the tool holder between its operative positions comprising a member having predetermined limited movement in opposite directions at the extremes of whichthe tool holder is disposed in its operative positions, alatch plate a latch carried by said membenandarranged to cooperate with the latch plate to holdthe member in one of its extreme positions, and'a lever constructed and arranged successively to release the latch and to move thesaid member from one of its extreme positions to theother- I 22. In an edge setting machine, a tool carrier, a tool holder mounted for movement between two operative positions, means formoving the tool. holder between its operative positions comprising a crank having a limited rotative movement whereby the operative positions of the holder are determined, said crankhavinga latch arranged to hold the crank in one of its extreme positions, and means mounted on the crank for successive- 1y releasing the latehand swinging the crank to its other extremeposition. V v l l I v23. In an edge setting machine, a tool carrier, a tool holder mounted for movement in the carrier between two operative positions, means for moving the tool holder between its operative positions comprising a member having a predetermined limited movement at the extremes of which the tool holder is disposed in its operative positions said member having latches arranged respectively to hold it in its operative positions, and means connected to said latches constructed and arranged successively to release the latches and to swing the member from one extreme posi- .tion to the other.

24. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotating drive shaft, a member mounted on said drive shaft to rotate therewith and arranged for limited pivotal movement with respect thereto about an axis transverse to the axis of rotation of the drive shaft, connections between said member and tool shaft for causing the latter to be oscillated as said member and drive shaft are rotated, and means for angularly positioning said member with respect to said drive shaft thereby to control the amplitude of oscillation of the tool shaft.

25. In an edge setting machine, a tool shaft carrying an edge setting tool, rotating drive means comprising a drive shaft having trunnions extending transversely of the axis of rotation of said drive shaft, a member mounted on said trunnions for limited angular adjustment with re spect to'the axis of said drive shaft, connections between said member and tool shaft for oscillating the latter as the drive means is rotated, and means for angularly positioning said member with respect to the drive shaft comprising a slide mounted for movement on said drive shaft axial- 1y thereof.

26. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotating drive shaft having trunnions, a sleeve mounted to rotate with said drive shaft about the axis thereof and so as to have limited angular adjustment with respect to said drive shaft about said trunnions, means connecting said tool shaft and sleeve for oscillating the tool shaft as the drive shaft is rotated, and means for angularly adjusting said sleeve comprising a slide mounted for movement on said drive shaft axially thereof.

27. In an edge setting machine, a tool shaft carrying an edge setting tool, rotating drive means comprising a drive shaft having trunnions and a sleeve mounted on said trunnions for limited angular adjustment with respect to the axis of rotation of said shaft, connections between said sleeve and tool shaft for oscillating the latter as the drive means is rotated, and means for adjustably positioning said sleeve angularly with respect to the axis of said drive shaft thereby to control the amplitude of oscillation of said tool shaft.

28. In an edge setting machine, a tool shaft carrying an edge setting tool, rotating drive means comprising a drive shaft having trunnions the axis of which is transverse to the axis of the 7 drive shaft and a member mounted on said trunnions to rotate with said drive shaft about the axis thereof, connections between said member and said tool shaft for oscillating the latter as the drive shaft is rotated, and means for angularly positioning said member with respect to the axis of rotation of said drive shaft thereby to control the amplitude of oscillation of the tool shaft.

29. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotating drive shaft, a member mounted to rotate with said drive shaft and arranged for limited pivotal movement with respect thereto about an axis transverse to the axis of rotation of the drive shaft, a swivel member rotatably mounted on said tool shaft and having a bore adapted to receive said first-mentioned member, and means for ,angularly positioning said first-mentioned member with respect to said drive shaft thereby to control the amplitude of oscillation of the tool shaft.

30. In an edge setting machine, a tool shaft carrying an edge setting tool, a rotating drive shaft carrying a member mounted thereon for limited pivotal movement about an axis extend ing transversely of the said axis of rotation of said shaft, connections between said member and said tool shaft for causing the latter to be oscillated as the tool shaft is rotated, and means for angularly positioning said member with respect to the axis of said tool shaft comprising an opcrater-controlled slide mounted for movement axially of the drive shaft.

FRANK BYCROFT KEALL. 

